2015 6 Hours of Circuit of the Americas
The 2015 6 Hours of Circuit of the Americas was an endurance sports car racing event held at the Circuit of the Americas, Austin, US, on 17–19 September 2015, and served as the fifth round of the 2015 FIA World Endurance Championship season. Porsche's Timo Bernhard, Brendon Hartley and Mark Webber won the race driving the No. 17 Porsche 919 Hybrid car.
Qualifying
Qualifying result
Pole position winners in each class are marked in bold.| Pos | Class | Team | Average Time | Grid |
| 1 | LMP1 | No. 18 Porsche Team | 1:46.211 | 1 |
| 2 | LMP1 | No. 17 Porsche Team | 1:46.375 | 2 |
| 3 | LMP1 | No. 8 Audi Sport Team Joest | 1:47.538 | 3 |
| 4 | LMP1 | No. 7 Audi Sport Team Joest | 1:47.898 | 4 |
| 5 | LMP1 | No. 1 Toyota Racing | 1:48.990 | 5 |
| 6 | LMP1 | No. 2 Toyota Racing | 1:49.176 | 6 |
| 7 | LMP1 | No. 12 Rebellion Racing | 1:53.950 | 7 |
| 8 | LMP1 | No. 13 Rebellion Racing | 1:54.506 | 8 |
| 9 | LMP1 | No. 4 Team ByKolles | 1:55.794 | 9 |
| 10 | LMP2 | No. 26 G-Drive Racing | 1:57.148 | 10 |
| 11 | LMP2 | No. 28 G-Drive Racing | 1:57.474 | 11 |
| 12 | LMP2 | No. 30 Extreme Speed Motorsports | 1:57.621 | 12 |
| 13 | LMP2 | No. 43 Team SARD Morand | 1:58.109 | 13 |
| 14 | LMP2 | No. 42 Strakka Racing | 1:59.749 | 14 |
| 15 | LMP2 | No. 31 Extreme Speed Motorsports | 2:01.480 | 15 |
| 16 | LMGTE Pro | No. 99 Aston Martin Racing V8 | 2:05.872 | 18 |
| 17 | LMGTE Pro | No. 91 Porsche Team Manthey | 2:06.134 | 19 |
| 18 | LMGTE Pro | No. 97 Aston Martin Racing | 2:06.272 | 20 |
| 19 | LMGTE Pro | No. 95 Aston Martin Racing | 2:06.294 | 21 |
| 20 | LMGTE Pro | No. 92 Porsche Team Manthey | 2:06.363 | 22 |
| 21 | LMGTE Pro | No. 51 AF Corse | 2:06.786 | 23 |
| 22 | LMGTE Pro | No. 71 AF Corse | 2:06.975 | 24 |
| 23 | LMGTE Am | No. 77 Dempsey Racing-Proton | 2:08.085 | 25 |
| 24 | LMGTE Am | No. 96 Aston Martin Racing | 2:08.264 | 26 |
| 25 | LMGTE Am | No. 83 AF Corse | 2:08.332 | 27 |
| 26 | LMGTE Am | No. 98 Aston Martin Racing | 2:08.440 | 28 |
| 27 | LMGTE Am | No. 72 SMP Racing | 2:08.442 | 29 |
| 28 | LMGTE Am | No. 50 Larbre Compétition | 2:08.802 | 30 |
| 29 | LMP2 | No. 36 Signatech Alpine | 1:57.860 | 16 |
| – | LMP2 | No. 47 KCMG | No Time | 17 |
| – | LMGTE Am | No. 88 Abu Dhabi-Proton Racing | No Time | 31 |
– Only one driver of the No. 36 Signatech Alpine set a lap time.
– The No. 47 KCMG had its qualifying lap time deleted due to driving the car in the opposite direction of the track, but was allowed to start from the rear of the LMP grid.
Race
Race result
Class winners in bold.| Pos | Class | No | Team | Drivers | Chassis | Tyre | Laps |
| Pos | Class | No | Team | Drivers | Engine | Tyre | Laps |
| 1 | LMP1 | 17 |  |